/**
* Checks if the signature covers the whole document
* and throws an exception if the document was altered
* @return a PdfPKCS7 object
* @throws GeneralSecurityException
*/
virtual protected PdfPKCS7 CoversWholeDocument()
{
PdfPKCS7 pkcs7 = fields.VerifySignature(signatureName);
if (fields.SignatureCoversWholeDocument(signatureName))
{
LOGGER.Info("The timestamp covers whole document.");
}
else
{
throw new VerificationException(null, "Signature doesn't cover whole document.");
}
if (pkcs7.Verify())
{
LOGGER.Info("The signed document has not been modified.");
return(pkcs7);
}
throw new VerificationException(null, "The document was altered after the signature was applied.");
}
